texturing_gui.py

                row.prop(tex, "mapping_y", text="")
                row.prop(tex, "mapping_z", text="")

            row = layout.row()
            row.column().prop(tex, "offset")
            row.column().prop(tex, "scale")


class TEXTURE_PT_POV_influence(TextureSlotPanel, Panel):
    """Use this class to define pov texture influence buttons."""

    bl_label = "Influence"
    COMPAT_ENGINES = {"POVRAY_RENDER"}
    bl_space_type = "PROPERTIES"
    bl_region_type = "WINDOW"
    # bl_context = 'texture'

    @classmethod
    def poll(cls, context):
        idblock = pov_context_tex_datablock(context)
        if (
            # isinstance(idblock, Brush) and # Brush used for everything since 2.8
            context.scene.texture_context
            == "OTHER"
        ):  # XXX replace by isinstance(idblock, bpy.types.Brush) and ...
            return False

        # Specify below also for pov_world_texture_slots, lights etc.
        # to display for various types of slots but only when any
        if not getattr(idblock, "pov_texture_slots", None):
            return False

        engine = context.scene.render.engine
        return engine in cls.COMPAT_ENGINES

    def draw(self, context):

        layout = self.layout

        idblock = pov_context_tex_datablock(context)
        # tex = context.pov_texture_slot
        # mat = bpy.context.active_object.active_material
        texslot = idblock.pov_texture_slots[
            idblock.pov.active_texture_index
        ]  # bpy.data.textures[mat.active_texture_index]
        # below tex unused yet ...maybe for particles?
        try:
            tex = bpy.data.textures[
                idblock.pov_texture_slots[idblock.pov.active_texture_index].texture
            ]  # NOT USED
        except KeyError:
            tex = None  # NOT USED

        def factor_but(layout, toggle, factor, name):
            row = layout.row(align=True)
            row.prop(texslot, toggle, text="")
            sub = row.row(align=True)
            sub.active = getattr(texslot, toggle)
            sub.prop(texslot, factor, text=name, slider=True)
            return sub  # XXX, temp. use_map_normal needs to override.

        if isinstance(idblock, Material):
            split = layout.split()

            col = split.column()
            if idblock.pov.type in {"SURFACE", "WIRE"}:

                split = layout.split()

                col = split.column()
                col.label(text="Diffuse:")
                factor_but(col, "use_map_diffuse", "diffuse_factor", "Intensity")
                factor_but(col, "use_map_color_diffuse", "diffuse_color_factor", "Color")
                factor_but(col, "use_map_alpha", "alpha_factor", "Alpha")
                factor_but(col, "use_map_translucency", "translucency_factor", "Translucency")

                col.label(text="Specular:")
                factor_but(col, "use_map_specular", "specular_factor", "Intensity")
                factor_but(col, "use_map_color_spec", "specular_color_factor", "Color")
                factor_but(col, "use_map_hardness", "hardness_factor", "Hardness")

                col = split.column()
                col.label(text="Shading:")
                factor_but(col, "use_map_ambient", "ambient_factor", "Ambient")
                factor_but(col, "use_map_emit", "emit_factor", "Emit")
                factor_but(col, "use_map_mirror", "mirror_factor", "Mirror")
                factor_but(col, "use_map_raymir", "raymir_factor", "Ray Mirror")

                col.label(text="Geometry:")
                # XXX replace 'or' when displacement is fixed to not rely on normal influence value.
                sub_tmp = factor_but(col, "use_map_normal", "normal_factor", "Normal")
                sub_tmp.active = texslot.use_map_normal or texslot.use_map_displacement
                # END XXX

                factor_but(col, "use_map_warp", "warp_factor", "Warp")
                factor_but(col, "use_map_displacement", "displacement_factor", "Displace")

            elif idblock.pov.type == "HALO":
                layout.label(text="Halo:")

                split = layout.split()

                col = split.column()
                factor_but(col, "use_map_color_diffuse", "diffuse_color_factor", "Color")
                factor_but(col, "use_map_alpha", "alpha_factor", "Alpha")

                col = split.column()
                factor_but(col, "use_map_raymir", "raymir_factor", "Size")
                factor_but(col, "use_map_hardness", "hardness_factor", "Hardness")
                factor_but(col, "use_map_translucency", "translucency_factor", "Add")
            elif idblock.pov.type == "VOLUME":
                layout.label(text="Volume:")

                split = layout.split()

                col = split.column()
                factor_but(col, "use_map_density", "density_factor", "Density")
                factor_but(col, "use_map_emission", "emission_factor", "Emission")
                factor_but(col, "use_map_scatter", "scattering_factor", "Scattering")
                factor_but(col, "use_map_reflect", "reflection_factor", "Reflection")

                col = split.column()
                col.label(text=" ")
                factor_but(col, "use_map_color_emission", "emission_color_factor", "Emission Color")
                factor_but(
                    col,
                    "use_map_color_transmission",
                    "transmission_color_factor",
                    "Transmission Color",
                )
                factor_but(
                    col, "use_map_color_reflection", "reflection_color_factor", "Reflection Color"
                )

                layout.label(text="Geometry:")

                split = layout.split()

                col = split.column()
                factor_but(col, "use_map_warp", "warp_factor", "Warp")

                col = split.column()
                factor_but(col, "use_map_displacement", "displacement_factor", "Displace")

        elif isinstance(idblock, Light):
            split = layout.split()

            col = split.column()
            factor_but(col, "use_map_color", "color_factor", "Color")

            col = split.column()
            factor_but(col, "use_map_shadow", "shadow_factor", "Shadow")

        elif isinstance(idblock, World):
            split = layout.split()

            col = split.column()
            factor_but(col, "use_map_blend", "blend_factor", "Blend")
            factor_but(col, "use_map_horizon", "horizon_factor", "Horizon")

            col = split.column()
            factor_but(col, "use_map_zenith_up", "zenith_up_factor", "Zenith Up")
            factor_but(col, "use_map_zenith_down", "zenith_down_factor", "Zenith Down")
        elif isinstance(idblock, ParticleSettings):
            split = layout.split()

            col = split.column()
            col.label(text="General:")
            factor_but(col, "use_map_time", "time_factor", "Time")
            factor_but(col, "use_map_life", "life_factor", "Lifetime")
            factor_but(col, "use_map_density", "density_factor", "Density")
            factor_but(col, "use_map_size", "size_factor", "Size")

            col = split.column()
            col.label(text="Physics:")
            factor_but(col, "use_map_velocity", "velocity_factor", "Velocity")
            factor_but(col, "use_map_damp", "damp_factor", "Damp")
            factor_but(col, "use_map_gravity", "gravity_factor", "Gravity")
            factor_but(col, "use_map_field", "field_factor", "Force Fields")

            layout.label(text="Hair:")

            split = layout.split()

            col = split.column()
            factor_but(col, "use_map_length", "length_factor", "Length")
            factor_but(col, "use_map_clump", "clump_factor", "Clump")
            factor_but(col, "use_map_twist", "twist_factor", "Twist")

            col = split.column()
            factor_but(col, "use_map_kink_amp", "kink_amp_factor", "Kink Amplitude")
            factor_but(col, "use_map_kink_freq", "kink_freq_factor", "Kink Frequency")
            factor_but(col, "use_map_rough", "rough_factor", "Rough")

        elif isinstance(idblock, FreestyleLineStyle):
            split = layout.split()

            col = split.column()
            factor_but(col, "use_map_color_diffuse", "diffuse_color_factor", "Color")
            col = split.column()
            factor_but(col, "use_map_alpha", "alpha_factor", "Alpha")

        layout.separator()

        if not isinstance(idblock, ParticleSettings):
            split = layout.split()

            col = split.column()
            # col.prop(tex, "blend_type", text="Blend") #deprecated since 2.8
            # col.prop(tex, "use_rgb_to_intensity") #deprecated since 2.8
            # color is used on gray-scale textures even when use_rgb_to_intensity is disabled.
            # col.prop(tex, "color", text="") #deprecated since 2.8

            col = split.column()
            # col.prop(tex, "invert", text="Negative") #deprecated since 2.8
            # col.prop(tex, "use_stencil") #deprecated since 2.8

        # if isinstance(idblock, (Material, World)):
        # col.prop(tex, "default_value", text="DVar", slider=True)


class TEXTURE_PT_POV_tex_gamma(TextureButtonsPanel, Panel):
    """Use this class to define pov texture gamma buttons."""

    bl_label = "Image Gamma"
    COMPAT_ENGINES = {"POVRAY_RENDER"}

    def draw_header(self, context):
        tex = context.texture

        self.layout.prop(tex.pov, "tex_gamma_enable", text="", icon="SEQ_LUMA_WAVEFORM")

    def draw(self, context):
        layout = self.layout

        tex = context.texture

        layout.active = tex.pov.tex_gamma_enable
        layout.prop(tex.pov, "tex_gamma_value", text="Gamma Value")


# commented out below UI for texture only custom code inside exported material:
# class TEXTURE_PT_povray_replacement_text(TextureButtonsPanel, Panel):
# bl_label = "Custom POV Code"
# COMPAT_ENGINES = {'POVRAY_RENDER'}

# def draw(self, context):
# layout = self.layout

# tex = context.texture

# col = layout.column()
# col.label(text="Replace properties with:")
# col.prop(tex.pov, "replacement_text", text="")


classes = (
    WORLD_TEXTURE_SLOTS_UL_POV_layerlist,
    TEXTURE_MT_POV_specials,
    # TEXTURE_PT_context # todo: solve UI design for painting
    TEXTURE_PT_POV_context_texture,
    TEXTURE_PT_colors,
    TEXTURE_PT_POV_type,
    TEXTURE_PT_POV_preview,
    TEXTURE_PT_POV_parameters,
    TEXTURE_PT_POV_tex_gamma,
    MATERIAL_TEXTURE_SLOTS_UL_POV_layerlist,
    TEXTURE_OT_POV_texture_slot_add,
    TEXTURE_OT_POV_texture_slot_remove,
    TEXTURE_OT_POV_context_texture_update,
    TEXTURE_PT_POV_influence,
    TEXTURE_PT_POV_mapping,
)


def register():
    for cls in classes:
        register_class(cls)


def unregister():
    for cls in reversed(classes):
        # if cls != TEXTURE_PT_context:
        unregister_class(cls)